diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ad8f7d1..3dda468 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -4,19 +4,18 @@ on: [push]
 
 jobs:
   build:
-
-    runs-on: heroku/heroku:18
+    runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.7
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip pipenv
-        pipenv install --system --dev
-    - name: Test with pytest
-      run: |
-        pytest
+      - uses: actions/checkout@v1
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip pipenv
+          pipenv install --system --dev
+      - name: Test with pytest
+        run: |
+          pytest